My point was that if someone is going to tip, then tip for the really huge things in life, not the small stuff.
A Doctor saving your life is huge, and should be worth acknowledgement. Most other things are all small stuff.
I used to work with an amazing Doctor, in my opinion he is a miracle worker. Cannot count how many times patients left without so much as thanking him. On one particular day he had already done about 15 hours in Emerg/OR, and was about to go home, so had I done a 15 hour shift, and was going to walk out to the parking lot with him. We hear them call a code, and announce inbound ambulance, eta 8 minutes, seriously injured woman in her 40s. He looked at me and said, "well lets go change and scrub". We turned around and headed towards the OR, and I asked him how he possibly had the energy left to do surgery. He said that despite being exhausted, nobody was dying today if he could possibly stop it. We operated on her until 02:45 then cleaned up, and walked out together, having been there since 06:30 the day before. That woman lived, and I was talking to her several days later, and she thanked me. I said ' You're welcome, but the Doctor who performed your surgery, after an already grueling day, is the hero you should be thanking'. She asked me how to thank him, I said get one of your visitors to bring up a nice Thank You card, and write something wonderful inside of it, and I'll be sure that he gets it. The woman does so, and I gave him the card. This amazing man burst into tears, and said that was the most beautiful thing, and how nice it felt to be thanked. I truly believe that the most underappreciated people around are Doctors, and mechanics. They fix problems, and rarely get thanked, or tipped, much less people really appreciating them.
Want to tip people, tip your mechanic who just did a lot of work on your car, truck, plane, boat, quad, tractor, piece of heavy equipment, motorbike, or whatever they fixed, and don't forget that Doctor who performed a miracle on you, your spouse, child, best friend, or whomever.
That woman in my opinion stood a 5% chance of making it when brought into the OR that night. But 3 weeks later she left the hospital, and went home to her husband and children. He does miracles regularly, rarely gets thanked, never tipped. How much is your life worth?